body {
    background-color: rgb(240, 248, 241);

}
article {
    background-color: #fff;
    min-width: 760px;
    max-width: 880px;
    padding: 20px;
    margin: 0 auto;
}

article .detail-info {
    border-bottom: 1px solid #ddd;
}

.editormd-html-preview {
    padding: 20px 0;
    box-sizing: border-box;
}